The parcel of land we have recently purchased in order to extend out forest garden was previously owned by a firewood merchant. The less said about that the better. When he 'uped stumps and left', he left many of his stumps behind, in the form of chunks of firewood overgrown with cocksfoot grass. Yesterday, I was clearing an area in preparation for planting flax and discovered a cache of native wood. It was somewhat damp and a little degraded, but it'll dry and serve as fuel for my wood burner.
Here's the stack. The logs are large and the pile stands as high as my shoulders.